Sewing machine



Get. 7 1924.

D. S. SEYMOUR SEWING MACHINE Filed Sent. 13. 1920 3 Sheets-Sheet l Get. 7 1924.

D. S. SEYMOUR SEWING MACHINE Filed Sent. 13. 1920 3 Sheets-Sheet 5 gln uc nfoz meme @et. 7, ieae.

estates rarest castes.

DUDLEY S. SEYMOUR, OF CHICAGO, HILINQIS, ASSIGITOR TQ UNIQN SPECIAL EEAGHINE CQMIPANY, 01F CHIGAGU, ILLINOIS, A CORPOTZON Q35 HTQIS.

SEWING ,BKAGEINE.

Application filed September 13, 18%. Serial Ito. Matti.

To all whom it may concern:

Be it known that I, DUDLEY S. SEYMOUR, a citizen of the United States, residing at Chicago, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Sewing Machines, of which the following is a description, reference being had to the accompanying drawing and to the figures of reference marked thereon.

The invention relates to new and useful improvements in sewing machines, and more particularly to the feeding mechanism of a sewing machine which is adapted for forming re atively long stitches.

An object of the invention is to provide a machine of the above character wherein the feed of the fabric is accomplished by a lateral movement of the needle while in the material, and wherein the looper cooperating with the needle is of a character to form double locked chain stitches and said looper is moved bodily with the needle in its lateral feeding movements so as to be properly positioned to cooperate with the needle and. permit a relatively wide range of lateral movement of the needle stitches.

A further object of the invention is to provide a needle feeding mechanism of the above character wherein the needle and looper are carried by the pivoted yoke which swings for giving a lateral movement to the needle for imparting feeding movements to the material. i

for producing long A still further object of the invention is.

to provide a feeding mechanism of the above character wherein the pivotal support for the yoke may be readily adjusted for varying the length of the feed.

Another object of the invention is to pro-, vide a machine of the above character wherein the needle avoiding movementof the looper is brought about by a bodily shifting of the "working position of the loo er. i till another object of the invention is to provide a sewing machine of the above character wherein the means for supporting and oscillating the needle and shifting the looper is located in the standard of the machine, and said machine is formed with a relatively short overhanging arm, thus especially adapting the machine for operating upon heavy material and for relatively long movegitudinally of the machine;

ments of the parts withog t producing excesslve vibrations.

These and other objects will in part be obvious and will in part be hereinafter more fully disclosed.

at their extreme forward movement and in dotted lines the position of the needle barand looper when at their extreme rearward movement;

Fig. 4 is a detail view showing a construction of the bar yoke;

F 1g. 5 is a horizontal sectional view on the line 5- 5 of Fig. 1;

Fig.6 is a detail sectional view on the line 66 of Fig. 5.

The invention is directed to a sewing machine which is adapted to operate upon coarse material, such as used for forming bags, and more particularly to the feeding pivotal support for the needle mechanism for feeding the material a stitch length. In certain classes of work, it is desired to feedthe material from one half to three-quarters of an inch between needle punches, and considerable difficulty has been experienced in properly controlling the material to bring about an even feed'thereof for such relatively long stitch lengths. This is accomplished in my improved machine by a lateral movement of the needle. The needle bar is mounted in an oscillating yoke, and this yoke is timed to oscillate when the needle is in.;the material so as to carry the material a stitch length by a lateral movement of the needle. needle is the ordinary threaded looper movable transversely of the line of feed, and means is provided for giving said looper the ordinary needle avoiding movement.

Cooperating with the c0 In the drawings, which show .by way of bodily shifting of looper with the movement of the needle for the of the material. The length of the feed is determined by the pivotal point of the yoke the means for pivotally supporting the yoke is adjustable so that the length of the feed may be varied. a

Referring more in detail to the drawings. l have shown my invention as applied to a sewing machine having a supporting bed 1,

' from which rises a standard 2. carrying an overhanging arm 3. llt will be noted from Fig. 1 of'the drawings that this overhanging arm is very short. Mounted to rotate in suitablebearings in the overhanging arm is a driving shaft l which is operated by a belt pulley 5. Mounted on the supporting bed 1 is a work support 6 on which the ma terial rests during the stitching thereof. Said work support is provided with a throat plate "8 which is formed with a long needle slot 8 which permits the needle to move laterally while in the material. needle is indicated at 9 in the drawings, and said needle is carried by a needlebar 10. The looper is indicated at 11 in the drawings gnd is of the usual threaded type V for cooperating with the needle to form shaped part 16 which connects spaced bearings 17 and 18. Mounted in these bearings is a shaft 19 and pivotally supported upon the outer end of the shaft 19 is a looper carrier 12. Said carrier is pivoted at 20 to said shaft. The shaft 19 is provided with the usual cone bearings, and the oscillations of the shaft give to the looper its needle avoiding movement, while the oscillation-s of the looper carrier 12 on the shaft 19 causes the looper to enter and to leave the needle loop.

The details of the bearing for supporting the yoke 13 are more clearly shown in Fig. i. The standard 2 is provided with a supporting bracket 21 which is provided with a vertically extending slot 22. A. sleeve 23 is located in said slot and is provided with a head 24 adapted to bear against one face of the bracket. A nut 25 threaded onto the outer end of the sleeve bears against a washer and serves as a means to clamp the sleeve in adjusted positions in said slot 22.

' Extending into said sleeve 23 is a shaft 26.

This shaft 26 is provided with a cone bear- The - not ing 2? "which is rigid with the shaft and adyustable cone bearing 28, and suitable nuts29 serve to clamp the cone bearings the sleeve. The shaft 26 is provided an extension 30 which extends through slot 31 in the yoke 13. A. nut 32 screwed onto the outer end of this extension 30 serves to clamp the yoke. By loosening the nut 32 and the nut 25. the sleeve 23 may be adjusted and the pivotal point of the yoke raised or lowered and Without raising or lowering the yoke which, of course. must remainin a fixed relation to the parts of the machine. This adjustment of the pivotal point of the yoke may be accomplished.

the usual construction. This crank is fixed a to the outer end of the shaft 4 and is piv otally' connected at 34 to a lug 35 which is clamped to the needle bar by means of screws 36. As the main shaft rotates, the

'needle'bar will not only be reciprooated in thefyoke but the yoke will be oscillated, as

will be apparent from Fig. 3 of the drawings.

The oscillations of the looper into and out of the needle loop are brought about through a link 37. The shaft 4; intermediate its ends is provided with a crank 38 having a ball section 39. The link 37 is connected to this ball section at its upper end and at its lower end is connected to a ball stud 4-0 carried by an arm l1 fixed to the looper carrier 12. This looper carrier 12, or as clearly shown in Fig. 3, is in the form of ayoke straddling the enlarged head on the end of the shaft/19. By means of this ball connection for the link 37, said link will swing with the looper in its bodily movements and as the shaft rotates will oscillate the looper. lit will be noted that the pivotal connection for the link 37 is in line or substantially so with the pivotal connection. between the crank 33 and the lug on the needle bar, and thus the timing of the looper and needle is maintained during the oscillations of the yoke. In other words, the bodily movement of the looper through the shifting of the carrier does not throw it out of timing with 'the needle bar.

the link 44 is pivoted at 4:6 to the frame of i the machine. As the looper shifts bodily from the full line position in Fig. 3 to the dotted line position shown therein, this link at will swing the entire looper carrier about ltltt t rones the axis of the shaft 19 and thus imparts to the looper its needle avoiding movement. The amount of movement imparted to the looper for its needle avoiding movement dends upon the position of the ivot bolt 45.

e arm 41 carrying the b slotted, as indicated at 47 in Fig. 1 of the drawings, and serves as a means or permitting the ball stud to be adjusted and thus the throw of the looper varied.

In order to render the pivotal support for the yoke readily accessible for adjusting the throw of the yoke, l. have provided the standard 2 with a slot 48 through which the nut 32 may be readily reached and this slot is covered by a plate &9. l have also pro vided the standard with a slot 50 through which the nuts 25 and 29 are readily accessible, and this slot is covered by means of a late 51.

he material is held on the work support by means of a presser foot 52. Said pr'esser foot 52 is pivotally connected at 53 to an arm 54 which is fixed to a shaft 55. This shaft 55. is mounted in hearings in the machine and at its rear end'carries a rearwardly extending arm 56 to which a treadle may be connected. Said shaft also has an upwardly extending arm 57 located in the standard, see Fig. 1, and a spring 58 bearing on the arm 57 serves as a means for yieldingl forcing the presser foot against the work support. The tension of this spring may be varied by means of a bolt 59. The ring 58 is seated in a socket 60 in the bed p ate, and the bolt 59 bears against the spring 58 intermediate its ends, and by adjusting the bolt 59 the tension of the spring 58 may be varied.

From the above, it' will be apparent that l.

have provided a sewing machine wherein the overhanging arm is very short, the parts of the yoke supporting the needle bar and the looper are re atively short, notwithstanding the fact that the yoke extends downwardly through the standard and outward- 1 into the arm to support the needle bar. 'dhe needle bar is also reciprocated by the same connection which oscillates the yoke, 20 that the entire machine is composed of ew little vibration in the parts of the machine though it be driven at high speed and operate upon heavy material, and the lateral movement of the needle bar for feedi is relatively long so as to produce long stit es. It is obvious that changes in the details of construction and the arrangement of the parts may be made without eparting from the spirit of the invention as set forth in the appended claims.

Having thus described the invention, what is claimed as new is:

1. A sewing machine including in combination, a needle, means for reciprocating stud 4:0 is

parts and is very strong, and there is.

said needle, means for giving the needle a I nation, a needle, means for reciprocating,

said needle, means forgiving the needle a lateral movement while in the material for feeding the same, a threaded looper cooperating with said needle, a support therefor, means for moving the looper into and out of the needle thread loop, and means for shifting the looper and its support bodily to maintain its cooperative relation to the needle as the needle shifts laterally for feeding the material and for giving a needle avoiding movement to the looper.

3. A sewing machine including in combination, a needle, means for reciprocating said needle, means for giving the needle a lateral movement whilein the material for feeding the same, a threaded looper cooperating with said needle, a supporttherefor, means for moving the looper into and out of the needle thread loop and in a plane at right anglesto the lateral movement of the needle while feeding the material, and means for shifting the looper and its support bodily to maintain its cooperative rela tion with the needle as it is shifted for feed ing the material and for giving the looper a needle avoiding movement.

4. A sewing machine including inco'mbination, a needle, a pivoted supporting yoke in the upper end of which said needle re meansfor swinging said yoke for shifting the needle while in the material for feeding the same, a looper mounted on the lower end of said yoke so as to oscillate in a plane at right angles to the lateral movements of the needle, and means for giving said looper a needle avoiding movement.

6. A sewing machine including in combination, a needle bar, a needle carried there- 'by, a yoke pivoted intermediate its ends in the upper end of which said needle bar re Jii ciprocates, means connected to the needle bar tor reciprocating the same and oseillating the yoke, a looper carrier pivoted at the lower end oi said yoke, means connected to the carrier for oscillating the same to give the looper a needle avoiding movement as the yoke swings, and means connected to the looper'for moving the same into and out of the needle loop.

7. it sewing machine including in combi nation, a base, a standard having an over-- hanging arm, a work support, a yoke located in said standard and extending outwardly into said overhanging arm and downwardly beneath the work support, a needle bar mounted to reciprocate in said yoke,'a needle carried thereby, means con nected to the needle bar for reciprocating the some and oscillating the yoke, a looper carrier pivoted at-the lower end of said yoke, means connected to the looper carrier for causing the looper carrier to oscillate as the yoke oscillates, and means for moving the looper on its carrier and into and out of the needle thread loop.

8. A sewing machine including in combi nation, a base, a standard having an overhanging arm, a work support, a yoke located in said standard and extending outwardly into said overhanging arm and downwardly beneath the Work support, a needle bar mounted to reciprocate in said yoke, a needle carried thereby, means connected to the needle bar for reciprocating the same and oscillating the yoke, a looper carrier pivoted at the lower end of said yoke, means connected to the looper carrier for causing said carrier to oscillate as the yoke oscillates, means for moving the looper on its carrier and into and out of the needle thread loop, and means in the standard for pivotally supporting said yoke, and means whereby said pivotal support may be adjusted vertically for varying the length of feed.

9. A sewing machine including in combination, a base, a standard having an overhanging arm, a work support, a yoke located in said standard and extending outwardly into said overhanging arm and downwardly beneath the Work support, a needle bar mounted to reci rocate in said yoke, a needle carried there y, means connected to the needle bar for reciprocating the same and oscillating the yoke, a looper carrier pivoted at lower end of s yoke, means connected the carrier .11" causing the carrier to oscillate as the yoke oscillates, means for moving the looper on its carrier and into and out of the needle thread loop, a bracket in said standard having a vertical slot, a supporting sleeve carried in said slot and vertically justable therein, a pivot pin carried by said sleeve for supporting said yoke, said yoke having a slot for the pivot pin where by the pivotal support for the yoke may be raised and lowered without bodily raising and lowering the yoke.

10. A sewing machine including in combination, a needle, a cooperating looper, yoke supporting the needle and looper, means for pivotally supporting the yoke whereby the needle may be moved laterally while in the material for feeding the same, said pivotal support for the yoke being adjustable vertically for varying the length of the feed stroke of the needle.

11. A. sewing machine including in combination, a yoke, a needle, a needle bar carrying the needle and reciprocating in said yoke, means connected to the needle bar for reciprocating the same and oscillating said yoke, a looper carried by the yoke, means for moving the looper to cause the same to cooperate with the needle, a bracket having a vertical slot, a sleeve adjustable in said slot, a pivot pin for the yoke carried in said sleeve, said yoke having a vertical slot in which the pivot pin may be adjusted whereby the pivotal support may be raised an]? lowered without raising or lowering the yo e.

12. A sewing machine including in combination a yoke, a needle, a needle bar carrying the needle and reciprocating in said yoke, means connected to the needle bar for reciprocating the same and oscillating said yoke, a looper carried by the yoke, means tor moving the looper to cause the same to cooperate with the needle, a bracket having a vertical slot, a sleeve adjustable in said slot, said sleeve having means for securing said sleeve in adjusted position, and a pivot pin for the yoke carried by said sleeve.

In testimony whereof, I afix my signature.

DUDLEY S. SEYMUUR.

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